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The Journal of Heredity 1988:79(4):314-315
© 1988 The American Genetic Association 79:314-315

research-article

Genetics of a Second Locus Determining Pungency in Chili Peppers (Capsicum)

F. Loaiza-Figueroa, and S. D. Tanksley

Department of Plant Breeding and Biometry, Cornell University Ithaca, New York

Address reprint requests to S. D. Tanksley, Department of Plant Breeding and Biometry, Cornell University, Ithaca, NY 14850.

Abstract

Lack of pungency has been shown to be controlled by a single recessive gene (C) in pepper (Capsicum annuum L.). We describe the discovery of a second independent gene (C2) conditioning absence of pungency. The source of this gene is the accession BG3547 (C. annuum var. glabriusculum). F1 progeny derived from a cross BG3547 (C2/C2 and ‘Deux des Landes’ (C annuum var. annuum) (c/c) were all pungent, whereas the F2 progeny segregated 9 pungent:7 nonpungent, consistent with the two-gene hypothesis. Progeny were scored for five isozyme loci—Aco-2, Pgm-1, Pgm-2, 6Pgdh-1, and 6Pgdh-2— none of which showed linkage with the C2 gene.


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